#$%^&*AU2018204304A120180705.pdf#####ABSTRACT A vascular treatment apparatus comprising: a handle having: a trigger mounted on the handle and being transitionable between a first state and a second state whereby transition of the trigger activates and de-activates a source of rotation； a male coupling rotably driven by the source of rotation； a cartridge engageable with the handle and having: a female coupling so sized and shaped as to be engageable by, and once engaged by, to be rotated by the male coupling； a wire having a proximal end fixed to the female coupling a main shaft extending therefrom and terminating at a distal end； and a sheath fixed to and extending from the cartridge, the sheath defining a lumen through which the wire runs wherein the sheath, when the female coupling is not engaged by the male coupling, covers the distal end of the wire, and wherein as the male coupling and the female coupling fully engage each other and the cartridge is engaged with the handle, the male coupling displaces female coupling detents to allow the female coupling to slide within the cartridge, thereby causing the sheath, when the female coupling is engaged by the male coupling, to slide back relative to the wire and uncover the distal end of the wire.1/7 N~ CbK
